/* ============================================
   KRLC SCHOOL WEBSITE - MAIN STYLESHEET
   Fresh green educational theme with richer details
   ============================================ */

/* --------------------------------------------
   GOTHAM FONT
   Place Gotham .woff2 files in the /fonts folder.
   Falls back to locally installed Gotham if available.
   -------------------------------------------- */
@font-face {
  font-family: 'Gotham';
  src: local('Gotham Book'), local('Gotham-Book'),
       url('../fonts/Gotham-Book.woff2') format('woff2'),
       url('../fonts/Gotham-Book.woff') format('woff');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Gotham';
  src: local('Gotham Medium'), local('Gotham-Medium'),
       url('../fonts/Gotham-Medium.woff2') format('woff2'),
       url('../fonts/Gotham-Medium.woff') format('woff');
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Gotham';
  src: local('Gotham Bold'), local('Gotham-Bold'),
       url('../fonts/Gotham-Bold.woff2') format('woff2'),
       url('../fonts/Gotham-Bold.woff') format('woff');
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

/* --------------------------------------------
   CSS CUSTOM PROPERTIES (Design Tokens)
   -------------------------------------------- */
:root {
  --color-primary: #178945;
  --color-primary-dark: #126b37;
  --color-primary-light: #22a356;
  --color-accent: #4dd489;
  --color-accent-light: #9ee4bc;
  --color-accent-glow: rgba(23, 137, 69, 0.28);

  --color-white: #ffffff;
  --color-off-white: #f5fbf7;
  --color-gray-100: #eef8f1;
  --color-gray-200: #d4edd9;
  --color-gray-500: #5a7264;
  --color-gray-700: #3d5c4a;
  --color-gray-900: #2d5040;

  --font-body: 'Gotham', 'Helvetica Neue', Arial, sans-serif;
  --font-heading: 'Gotham', 'Helvetica Neue', Arial, sans-serif;

  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;

  --container-max: 1200px;
  --header-height: 72px;

  --shadow-sm: 0 2px 8px rgba(23, 137, 69, 0.08);
  --shadow-md: 0 4px 20px rgba(23, 137, 69, 0.12);
  --shadow-lg: 0 8px 40px rgba(23, 137, 69, 0.16);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* --------------------------------------------
   RESET & BASE STYLES
   -------------------------------------------- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
  background-color: #eef8f1;
}

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-gray-700);
  background-color: #eef8f1;
  background-image:
    radial-gradient(ellipse 50rem 36rem at -4% -2%, rgba(157, 228, 188, 0.2), transparent 62%),
    radial-gradient(ellipse 46rem 34rem at 104% 102%, rgba(34, 163, 86, 0.2), transparent 60%),
    radial-gradient(ellipse 30rem 24rem at 100% 0%, rgba(77, 212, 137, 0.2), transparent 58%),
    radial-gradient(rgba(23, 137, 69, 0.2) 1.25px, transparent 1.26px);
  background-size: auto, auto, auto, 24px 24px;
  overflow-x: hidden;
}

body::before,
body::after {
  content: '';
  position: fixed;
  pointer-events: none;
  z-index: -1;
  border-radius: 50%;
  filter: blur(8px);
  opacity: 0.2;
}

body::before {
  width: 22rem;
  height: 22rem;
  top: 28%;
  right: -5rem;
  background: rgb(157, 228, 188);
}

body::after {
  width: 18rem;
  height: 18rem;
  bottom: 12%;
  left: -4rem;
  background: rgb(77, 212, 137);
}

::selection {
  background: var(--color-accent-light);
  color: var(--color-primary-dark);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition);
}

a:hover {
  color: var(--color-accent);
}

ul {
  list-style: none;
}

/* --------------------------------------------
   UTILITY CLASSES
   -------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.section {
  padding: var(--space-3xl) 0;
  position: relative;
}

.section__header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto var(--space-2xl);
}

.section__label {
  display: inline-block;
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-sm);
}

.section__title {
  font-family: var(--font-heading);
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  color: var(--color-primary-dark);
  margin-bottom: var(--space-md);
  line-height: 1.2;
}

.section__title::after {
  content: '';
  display: block;
  width: 44px;
  height: 3px;
  margin: 0.85rem auto 0;
  border-radius: 3px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
}

.section__subtitle {
  font-size: 1.0625rem;
  color: var(--color-gray-500);
  line-height: 1.7;
}

.section__title--left {
  text-align: left;
}

.section__title--left::after {
  margin-left: 0;
}

/* --------------------------------------------
   BUTTONS
   -------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 0.875rem 1.75rem;
  font-size: 0.9375rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
}

.btn--primary {
  background: linear-gradient(135deg, var(--color-primary-light), var(--color-primary));
  color: var(--color-white);
  box-shadow: 0 4px 15px var(--color-accent-glow);
}

.btn--primary:hover {
  background: linear-gradient(135deg, var(--color-accent), var(--color-primary-light));
  color: var(--color-white);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px var(--color-accent-glow);
}

.btn--outline {
  background: transparent;
  color: var(--color-white);
  border-color: rgba(255, 255, 255, 0.6);
}

.btn--outline:hover {
  background: var(--color-white);
  color: var(--color-primary);
  border-color: var(--color-white);
}

.btn--gold {
  background: var(--color-white);
  color: var(--color-primary);
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.12);
}

.btn--gold:hover {
  background: var(--color-accent-light);
  color: var(--color-primary-dark);
  transform: translateY(-2px);
}

.btn--full {
  width: 100%;
}

/* --------------------------------------------
   SCROLL ANIMATIONS
   -------------------------------------------- */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.animate-on-scroll.visible {
  opacity: 1;
  transform: translateY(0);
}

.cards-grid .animate-on-scroll:nth-child(2) { transition-delay: 0.1s; }
.cards-grid .animate-on-scroll:nth-child(3) { transition-delay: 0.2s; }
.cards-grid .animate-on-scroll:nth-child(4) { transition-delay: 0.3s; }
.cards-grid .animate-on-scroll:nth-child(5) { transition-delay: 0.4s; }
.cards-grid .animate-on-scroll:nth-child(6) { transition-delay: 0.5s; }
.cards-grid .animate-on-scroll:nth-child(7) { transition-delay: 0.6s; }
.cards-grid .animate-on-scroll:nth-child(8) { transition-delay: 0.7s; }

.home-preview__grid .animate-on-scroll:nth-child(2),
.values__grid .animate-on-scroll:nth-child(2),
.activities__grid .animate-on-scroll:nth-child(2) { transition-delay: 0.1s; }

.home-preview__grid .animate-on-scroll:nth-child(3),
.values__grid .animate-on-scroll:nth-child(3),
.activities__grid .animate-on-scroll:nth-child(3) { transition-delay: 0.2s; }

.home-preview__grid .animate-on-scroll:nth-child(4),
.activities__grid .animate-on-scroll:nth-child(4) { transition-delay: 0.3s; }

.activities__grid .animate-on-scroll:nth-child(5) { transition-delay: 0.4s; }
.activities__grid .animate-on-scroll:nth-child(6) { transition-delay: 0.5s; }

/* --------------------------------------------
   HEADER & NAVIGATION
   -------------------------------------------- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-height);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--color-gray-200);
  transition: box-shadow var(--transition), background var(--transition);
}

.header::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary-dark), var(--color-accent), var(--color-primary));
}

.header.scrolled {
  background: rgba(255, 255, 255, 0.97);
  box-shadow: var(--shadow-md);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  color: var(--color-primary);
  font-weight: 700;
  font-size: 1.125rem;
  min-width: 0;
}

.nav__logo:hover {
  color: var(--color-primary-dark);
}

.nav__logo-img {
  width: 60px;
  height: 60px;
  object-fit: contain;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}

.nav__logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.nav__logo-name {
  font-size: 1.50rem;
  letter-spacing: 0.06em;
}

.nav__logo-sub {
  font-size: 0.65rem;
  font-weight: 500;
  color: var(--color-gray-500);
  white-space: nowrap;
}

.nav__logo-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--color-accent), var(--color-primary-light));
  border-radius: var(--radius-sm);
  font-family: var(--font-heading);
  font-size: 1.25rem;
}

.nav__menu {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.nav__link {
  display: block;
  padding: 0.35rem 0.75rem;
  color: var(--color-primary);
  background: transparent;
  font-size: 0.9375rem;
  font-weight: 600;
  border: none;
  border-radius: 8px;
  transition: all var(--transition);
}

.nav__link:hover {
  color: var(--color-primary);
  background: rgba(23, 137, 69, 0.08);
}

.nav__link:active,
.nav__link.active {
  color: var(--color-primary);
  background: rgba(23, 137, 69, 0.14);
}

.nav__link--cta {
  background: var(--color-primary);
  color: var(--color-white);
  margin-left: 0.25rem;
}

.nav__link--cta:hover,
.nav__link--cta.active {
  background: var(--color-primary-dark);
  color: var(--color-white);
}

.nav__toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: var(--space-sm);
}

.nav__toggle-bar {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-primary);
  border-radius: 2px;
  transition: all var(--transition);
}

.nav__toggle.active .nav__toggle-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav__toggle.active .nav__toggle-bar:nth-child(2) {
  opacity: 0;
}

.nav__toggle.active .nav__toggle-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* --------------------------------------------
   HERO SECTION
   -------------------------------------------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.9) 0%, rgba(245, 251, 247, 0.8) 100%),
    url('../image/cover.jpg') center/cover no-repeat;
  color: var(--color-gray-700);
  text-align: center;
  padding: var(--space-3xl) var(--space-lg);
  overflow: hidden;
}

.hero::before,
.hero::after {
  content: '';
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
}

.hero::before {
  width: 420px;
  height: 420px;
  top: -120px;
  right: -80px;
  background: radial-gradient(circle, rgba(77, 212, 137, 0.22) 0%, transparent 70%);
}

.hero::after {
  width: 340px;
  height: 340px;
  bottom: -100px;
  left: -60px;
  background: radial-gradient(circle, rgba(23, 137, 69, 0.16) 0%, transparent 70%);
}

.hero__overlay {
  position: absolute;
  inset: 0;
  background: transparent;
  pointer-events: none;
}

.hero__content {
  position: relative;
  z-index: 1;
}

.hero__tag {
  font-size: 1rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-md);
}

.hero__title {
  font-family: var(--font-heading);
  font-size: clamp(2.5rem, 8vw, 4.5rem);
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: var(--space-lg);
  color: var(--color-primary-dark);
}

.hero__title::after {
  content: '';
  display: block;
  width: 64px;
  height: 4px;
  margin: 1.1rem auto 0;
  border-radius: 4px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
}

.hero__subtitle {
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  max-width: 600px;
  margin: 0 auto var(--space-xl);
  color: var(--color-gray-500);
  line-height: 1.7;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  justify-content: center;
}

.hero .btn--outline {
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.hero .btn--outline:hover {
  background: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}

.hero__scroll {
  position: absolute;
  bottom: var(--space-xl);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
  color: var(--color-gray-500);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  animation: bounce 2s infinite;
  z-index: 1;
}

.hero__scroll:hover {
  color: var(--color-primary);
}

.hero__scroll-arrow {
  width: 20px;
  height: 20px;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: rotate(45deg);
}

@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(8px); }
}

/* --------------------------------------------
   PAGE HERO (Inner pages)
   -------------------------------------------- */
.page-hero {
  position: relative;
  padding-top: calc(var(--header-height) + var(--space-3xl));
  padding-bottom: var(--space-3xl);
  background:
    radial-gradient(circle at 90% 10%, rgba(157, 228, 188, 0.22), transparent 42%),
    linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
  color: var(--color-white);
  text-align: center;
  overflow: hidden;
}

.page-hero--dark {
  background: var(--color-primary-dark);
}

.page-hero .container {
  position: relative;
  z-index: 1;
}

.page-hero__label {
  display: inline-block;
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent-light);
  margin-bottom: var(--space-sm);
}

.page-hero__title {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--space-md);
}

.page-hero__subtitle {
  font-size: 1.0625rem;
  max-width: 640px;
  margin: 0 auto;
  opacity: 0.9;
  line-height: 1.7;
}

/* --------------------------------------------
   HOME PREVIEW CARDS
   -------------------------------------------- */
.home-preview {
  background: transparent;
}

.home-preview__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-lg);
}

.preview-card {
  display: flex;
  flex-direction: column;
  padding: var(--space-xl);
  background: var(--color-off-white);
  border-radius: var(--radius-md);
  border: 2px solid transparent;
  text-decoration: none;
  color: inherit;
  position: relative;
  overflow: hidden;
  transition: all var(--transition);
}

.preview-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}

.preview-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-accent-light);
  color: inherit;
}

.preview-card:hover::before {
  transform: scaleX(1);
}

.preview-card__icon {
  width: 56px;
  height: 56px;
  display: grid;
  place-items: center;
  font-size: 1.6rem;
  margin-bottom: var(--space-md);
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: 14px;
  box-shadow: var(--shadow-sm);
}

.preview-card h3 {
  font-family: var(--font-heading);
  font-size: 1.125rem;
  color: var(--color-primary-dark);
  margin-bottom: var(--space-sm);
}

.preview-card p {
  font-size: 0.9375rem;
  color: var(--color-gray-500);
  line-height: 1.6;
  flex-grow: 1;
}

.preview-card__more {
  display: inline-flex;
  margin-top: 1rem;
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--color-primary);
}

.preview-card:hover .preview-card__more {
  color: var(--color-primary-dark);
}

/* --------------------------------------------
   ABOUT SECTION
   -------------------------------------------- */
.about {
  background: transparent;
}

.about__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2xl);
  align-items: center;
}

.about__content p {
  margin-bottom: var(--space-md);
  color: var(--color-gray-500);
  line-height: 1.8;
}

.about__features {
  margin-top: var(--space-lg);
}

.about__features li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
  color: var(--color-gray-700);
}

.about__feature-icon {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-accent);
  color: var(--color-white);
  border-radius: 50%;
  font-size: 0.75rem;
  font-weight: 700;
}

.about__stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
}

.stat-card {
  background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary));
  color: var(--color-white);
  padding: var(--space-xl);
  border-radius: var(--radius-md);
  text-align: center;
  position: relative;
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition);
}

.stat-card::after {
  content: '';
  position: absolute;
  width: 80px;
  height: 80px;
  right: -20px;
  bottom: -24px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
}

.stat-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.stat-card__number {
  display: block;
  font-family: var(--font-heading);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--color-accent-light);
  line-height: 1;
  margin-bottom: var(--space-sm);
}

.stat-card__label {
  font-size: 0.875rem;
  opacity: 0.85;
}

.values {
  background: transparent;
}

.values__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}

.value-card {
  background: var(--color-white);
  padding: 2rem 1.5rem;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  border: 1px solid transparent;
  text-align: center;
  transition: all var(--transition);
}

.value-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-accent-light);
}

.value-card__index {
  display: inline-block;
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--color-primary);
  margin-bottom: var(--space-sm);
}

.value-card h3 {
  font-size: 1.2rem;
  color: var(--color-primary-dark);
  margin-bottom: var(--space-sm);
}

.value-card p {
  color: var(--color-gray-500);
  font-size: 0.95rem;
}

/* --------------------------------------------
   ACADEMIC SECTION
   -------------------------------------------- */
.academic {
  background: transparent;
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
}

.cards-grid--programs {
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: var(--space-md);
}

.cards-grid--programs .subject-card {
  padding: var(--space-md);
}

.cards-grid--programs .subject-card__icon {
  font-size: 1.5rem;
  margin-bottom: var(--space-sm);
}

.cards-grid--programs .subject-card__title {
  font-size: 1rem;
  margin-bottom: var(--space-xs);
}

.cards-grid--programs .subject-card__desc {
  font-size: 0.8125rem;
  line-height: 1.45;
  margin-bottom: var(--space-sm);
}

.cards-grid--programs .subject-card__level {
  font-size: 0.6875rem;
  padding: 0.15rem var(--space-sm);
}

.academic__subjects-header {
  margin-top: var(--space-3xl);
}

.subject-card {
  background: var(--color-white);
  padding: 1.25rem;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  border: 1px solid transparent;
  position: relative;
  overflow: hidden;
  cursor: pointer;
  transition: all var(--transition);
}

.subject-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}

.subject-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-accent-light);
}

.subject-card:hover::before {
  transform: scaleX(1);
}

.subject-card__icon {
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  font-size: 1.5rem;
  margin-bottom: var(--space-sm);
  background: var(--color-gray-100);
  border-radius: 12px;
}

.subject-card__title {
  font-family: var(--font-heading);
  font-size: 1.0625rem;
  color: var(--color-primary-dark);
  margin-bottom: var(--space-xs);
}

.subject-card__desc {
  font-size: 0.8125rem;
  color: var(--color-gray-500);
  line-height: 1.5;
  margin-bottom: var(--space-sm);
}

.subject-card__level {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-primary);
  background: var(--color-gray-100);
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-sm);
}

/* --------------------------------------------
   TEACHERS SECTION
   -------------------------------------------- */
.teachers {
  background: transparent;
}

.teachers__nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-sm);
  margin: 0 auto var(--space-xl);
}

.teachers__nav-btn {
  padding: 0.45rem 0.95rem;
  border-radius: 999px;
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  font-family: inherit;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-primary-dark);
  cursor: pointer;
  transition: all var(--transition);
}

.teachers__nav-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: var(--color-off-white);
}

.teachers__nav-btn.is-active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-white);
}

.teachers__hint,
.teachers__empty {
  text-align: center;
  color: var(--color-gray-500);
  font-size: 0.9375rem;
}

.teachers__group:has(.teacher-card) .teachers__empty {
  display: none;
}

.teachers__group[hidden] {
  display: none;
}

.teachers__group-header {
  text-align: center;
  margin-bottom: var(--space-xl);
}

.teachers__group-title {
  font-family: var(--font-heading);
  font-size: clamp(1.35rem, 3vw, 1.85rem);
  font-weight: 700;
  color: var(--color-primary-dark);
  line-height: 1.2;
}

.teachers__group-title::after {
  content: '';
  display: block;
  width: 36px;
  height: 3px;
  margin: 0.7rem auto 0;
  border-radius: 3px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
}

.cards-grid--teachers {
  grid-template-columns: repeat(4, minmax(0, 220px));
  justify-content: center;
}

.teacher-card {
  text-align: center;
  width: 100%;
  max-width: 220px;
  margin-inline: auto;
  padding: var(--space-md) var(--space-sm) var(--space-lg);
  background: var(--color-off-white);
  border-radius: var(--radius-md);
  transition: all var(--transition);
}

.teacher-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.teacher-card__avatar {
  width: 108px;
  height: 108px;
  margin: 0 auto var(--space-sm);
  border-radius: 50%;
  overflow: hidden;
  border: 3px solid var(--color-white);
  box-shadow: 0 0 0 2px var(--color-primary), var(--shadow-sm);
}

.teacher-card__avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.45s ease;
}

.teacher-card:hover .teacher-card__avatar img {
  transform: scale(1.06);
}

.teacher-card__name {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-primary-dark);
  margin-bottom: var(--space-xs);
}

.teacher-card__role {
  font-family: var(--font-heading);
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--color-accent);
  margin-bottom: var(--space-sm);
}

.teacher-card__bio {
  font-size: 0.8125rem;
  color: var(--color-gray-500);
  line-height: 1.6;
}

/* --------------------------------------------
   ACTIVITIES SECTION
   -------------------------------------------- */
.activities {
  background: transparent;
}

.activities__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}

.activity-card {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  aspect-ratio: 4 / 3;
  cursor: pointer;
  box-shadow: var(--shadow-sm);
}

.activity-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.activity-card:hover img {
  transform: scale(1.08);
}

.activity-card__caption {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: var(--space-lg);
  background: linear-gradient(to top, rgba(18, 107, 55, 0.72) 0%, transparent 48%);
  color: var(--color-white);
  transition: background var(--transition);
}

.activity-card:hover .activity-card__caption {
  background: linear-gradient(to top, rgba(18, 107, 55, 0.82) 0%, transparent 52%);
}

.activity-card__tag {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--color-white);
  margin-bottom: var(--space-xs);
}

.activity-card__caption h3 {
  font-family: var(--font-heading);
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-white);
}

/* --------------------------------------------
   CONTACT SECTION
   -------------------------------------------- */
.contact {
  background: transparent;
}

.contact__grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: var(--space-2xl);
  align-items: start;
}

.contact__info-item {
  display: flex;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
  padding: 1rem 1.1rem;
  background: var(--color-white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

.contact__info-icon {
  flex-shrink: 0;
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  font-size: 1.25rem;
  background: var(--color-gray-100);
  border-radius: 10px;
}

.contact__info-item h3 {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-primary-dark);
  margin-bottom: var(--space-xs);
}

.contact__info-item p {
  font-size: 0.9375rem;
  color: var(--color-gray-500);
}

.contact__form {
  background: var(--color-white);
  padding: var(--space-xl);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
}

.contact__form-intro {
  margin-bottom: 1.25rem;
}

.contact__form-intro .section__title {
  font-size: 1.5rem;
}

.form-group {
  margin-bottom: var(--space-lg);
}

.form-group label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-gray-700);
  margin-bottom: var(--space-sm);
}

.required {
  color: #e63946;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  font-family: inherit;
  font-size: 0.9375rem;
  color: var(--color-gray-700);
  background: var(--color-off-white);
  border: 2px solid transparent;
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  background: var(--color-white);
  box-shadow: 0 0 0 3px var(--color-accent-glow);
}

.form-group input.error,
.form-group select.error,
.form-group textarea.error {
  border-color: #e63946;
  background: #fff5f5;
}

.form-error {
  display: block;
  font-size: 0.8125rem;
  color: #e63946;
  margin-top: var(--space-xs);
  min-height: 1.25rem;
}

.form-success {
  background: #d4edda;
  color: #155724;
  padding: var(--space-md);
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-lg);
  font-size: 0.9375rem;
}

/* --------------------------------------------
   FOOTER
   -------------------------------------------- */
.footer {
  background: var(--color-primary);
  color: rgba(255, 255, 255, 0.9);
  padding: var(--space-3xl) 0 var(--space-lg);
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-2xl);
  margin-bottom: var(--space-2xl);
}

.footer__logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  color: var(--color-white);
  font-weight: 700;
  font-size: 1.125rem;
  margin-bottom: var(--space-md);
}

.footer__logo:hover {
  color: var(--color-accent-light);
}

.footer__logo-img {
  width: 48px;
  height: 48px;
  object-fit: contain;
  flex-shrink: 0;
}

.footer__desc {
  font-size: 0.9375rem;
  line-height: 1.7;
  opacity: 0.8;
}

.footer__links h3,
.footer__contact h3,
.footer__social h3 {
  color: var(--color-white);
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: var(--space-md);
}

.footer__links ul li,
.footer__contact ul li {
  margin-bottom: var(--space-sm);
}

.footer__links a {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.9375rem;
  transition: color var(--transition);
}

.footer__links a:hover {
  color: var(--color-accent-light);
}

.footer__contact ul li {
  font-size: 0.9375rem;
  opacity: 0.8;
}

.social-links {
  display: flex;
  gap: var(--space-sm);
}

.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-sm);
  color: var(--color-white);
  transition: all var(--transition);
}

.social-link svg {
  width: 20px;
  height: 20px;
}

.social-link:hover {
  background: var(--color-accent);
  color: var(--color-primary-dark);
  transform: translateY(-2px);
}

.footer__bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--space-lg);
  text-align: center;
  font-size: 0.875rem;
  opacity: 0.7;
}

/* --------------------------------------------
   BACK TO TOP BUTTON
   -------------------------------------------- */
.back-to-top {
  position: fixed;
  bottom: var(--space-lg);
  right: var(--space-lg);
  width: 48px;
  height: 48px;
  background: var(--color-accent);
  color: var(--color-white);
  border: none;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
  transition: all var(--transition);
  z-index: 999;
}

.back-to-top svg {
  width: 24px;
  height: 24px;
}

.back-to-top:hover {
  background: var(--color-accent-light);
  transform: translateY(-4px);
}

.back-to-top[hidden] {
  display: none;
}

/* ============================================
   RESPONSIVE BREAKPOINTS
   ============================================ */

@media (max-width: 1100px) {
  .cards-grid--programs {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 992px) {
  .home-preview__grid,
  .values__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .cards-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .cards-grid--teachers {
    grid-template-columns: repeat(2, minmax(0, 220px));
    justify-content: center;
  }

  .activities__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .about__grid,
  .contact__grid {
    grid-template-columns: 1fr;
  }

  .footer__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .nav__logo-sub {
    display: none;
  }
}

@media (max-width: 768px) {
  :root {
    --header-height: 64px;
  }

  .nav__toggle {
    display: flex;
  }

  .nav__menu {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--color-white);
    border-bottom: 1px solid var(--color-gray-200);
    flex-direction: column;
    padding: var(--space-lg);
    gap: var(--space-xs);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition);
    box-shadow: var(--shadow-lg);
  }

  .nav__menu.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .nav__link {
    padding: var(--space-md);
    width: 100%;
    text-align: left;
  }

  .nav__link--cta {
    margin-left: 0;
    margin-top: var(--space-sm);
    text-align: center;
  }

  .home-preview__grid,
  .values__grid,
  .cards-grid,
  .cards-grid--teachers,
  .cards-grid--programs,
  .activities__grid {
    grid-template-columns: 1fr;
  }


  .about__stats {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer__grid {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .social-links {
    justify-content: center;
  }

  .footer__logo {
    justify-content: center;
  }

  .hero__actions {
    flex-direction: column;
    align-items: center;
  }

  .btn {
    width: 100%;
    max-width: 280px;
  }
}

@media (max-width: 480px) {
  .section {
    padding: var(--space-2xl) 0;
  }

  .stat-card__number {
    font-size: 2rem;
  }

  .about__stats {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .animate-on-scroll {
    opacity: 1;
    transform: none;
  }
}